The private revelations associated with Fatima, Portugal, beginning with the messages of the Angel to the children in 1916, and then by Our Lady beginning in May of 1917, focus on making reparation for sins and for the conversion of sinners through prayer and penance. Notably, the messages specifically request reparation for sins which offend the Immaculate Heart of Mary, and link this reparation to the Holy Eucharist—and, by implication, to Christ’s Heart present therein. The Fatima revelations follow upon and complement those communicated by Our Lord to St. Margaret Mary Alacoque at Paray-le-Monial in the 1670s, in which Jesus asks for reparation to His Heart in the Eucharist. This complementarity is evident in light of the deep and inseparable union between the Hearts of Jesus and Mary—a union that is recognized in Tradition and confirmed in recent papal teaching, especially that of Pope St. John Paul II.
Campbell, Dwight P.
"Theological Foundations for Eucharistic Reparation to the Heart of Jesus through the Heart of Mary in the Context of Messages Given to St. Margaret Mary and at Fatima,"
Vol. 67, Article 4, Pages 43-96.
Available at: https://ecommons.udayton.edu/marian_studies/vol67/iss1/4